Commercial electric motors do not use

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Question

(B) Commercial electric motors are designed for high power and efficiency. $1$. They use an electromagnet instead of a permanent magnet because electr

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a permanent magnet to rotate the armature

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(B) Commercial electric motors are designed for high power and efficiency. $1$. They use an electromagnet instead of a permanent magnet because electromagnets can generate much stronger magnetic fields,which are essential for high-torque applications. $2$. They use a large number of turns of conducting wire to increase the magnetic effect of the coil. $3$. They use a soft iron core on which the coil is wound to increase the magnetic flux through the coil. Therefore,commercial electric motors do not use a permanent magnet to rotate the armature.

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